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Product Detailed Parameters
- Description：IC REG LINEAR 1.5V 1.5A TO263-3
- Series：-
- Mfr：TAEJIN
- Package：Tape & Reel (TR)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：26V
- Voltage - Output (Min/Fixed)：1.5V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.35V @ 1.5A
- Current - Output：1.5A
- Current - Quiescent (Iq)：8 mA
- Current - Supply (Max)：-
- PSRR：-
- Control Features：-
- Protection Features：Over Current, Over Temperature, Over Voltage, Reverse Polarity
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：TO-263-4, D2PAK (3 Leads + Tab), TO-263AA
- Supplier Device Package：TO-263-3
- Grade：-
- Qualification：-
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Overview
The LM29150R-1.5 is a fixed-output low-dropout voltage regulator manufactured by TAEJIN (HTC Korea). It provides a stable 1.5V output with a maximum current capability of 1.5A. The device utilizes a PNP pass element to achieve a dropout voltage of 350mV at full load and features very low ground current. It offers an accurate initial tolerance of ±1% and includes internal protections against over-current, thermal overload, and reverse polarity. The component is supplied in a TO-263 package.
Feature Summary
- High current capability of 1.5A with extremely fast transient response
- Low dropout voltage of 350mV at full load using PNP pass element technology
- Accurate 1% guaranteed initial output voltage tolerance
- Comprehensive protection including reverse-battery, load dump, and thermal shutdown
Applications
- Battery powered equipment
- High-efficiency linear power supplies
- Post-regulator for switching supplies
- Automotive electronics
Procurement Notes
Verify the specific manufacturer designation as HTC Korea or TAEJIN when sourcing, as both names appear in documentation. Confirm the package type is TO-263 (D2PAK) and that the suffix 'R' indicates reel supply. Ensure the ordering code matches the required 1.5V fixed output variant within the LM29150 series.
Selection Notes
Select this component for applications requiring high efficiency near the input voltage limit due to its low dropout characteristics. It is suitable for systems needing robust fault protection against transient spikes and reverse polarity. Consider the TO-263 package for adequate thermal dissipation when operating near the 1.5A current limit.
Part Context
This part belongs to the LM2915x family, which includes the LM29150 (fixed), LM29151 (fixed with enable), and LM29152 (adjustable). The R suffix denotes the TO-263 surface-mount package configuration. The series is designed for moderate to high current regulator applications where noise filtering and battery life are critical.
Replacement Considerations
Compatible alternatives include the STMicroelectronics LD29150DT18R and similar 1.5A LDO regulators from manufacturers like Micrel/Microchip, provided pinouts and electrical specifications such as dropout voltage and current limits are verified.
FAQ
What is the minimum load current required for proper operation?
The LM29150 regulators require a minimum load current of 5mA to swamp leakage currents and ensure stable output voltage across the operating temperature range.
How does the device handle input voltage transients?
The device features transient protection allowing survival when input voltage spikes between -20V and +60V. An over-voltage sensor temporarily disables the regulator if input exceeds approximately 35V to 40V.
